| ModCon Connector Details |
| The column on the right is for writing in the pin functions for a particular application. Note that some of the pins may be in use such as all port B and port C pins for the on-board 32K memory socket. |
| HC11 Pin # | ModCon Connections | HC11 Port | Alternate Function | Input or Output | Use | |
|---|---|---|---|---|---|---|
| Port A: timer functions and general purpose I/O | ||||||
| 34 | B28 | PA0 | IC3 | in | ||
| 33 | B27 | PA1 | IC2 | in | ||
| 32 | B30 | PA2 | IC1 | in | ||
| 31 | B29, J7-1 | PA3 | OC5/IC4/OC1 | in/out | ||
| 30 | A30, J6-1 | PA4 | OC4 | out | ||
| 29 | A29, J5-1 | PA5 | OC3 | out | ||
| 28 | A28, J4-1 | PA6 | OC2 | out | ||
| 27 | A27 | PA7 | PAI | in/out | ||
| Port B: MSB address lines and general purpose outputs. Note: These pins are used by the 32K memory socket and are not available for general purpose I/O if the 32K memory is used | ||||||
| 42 | B20 | PB0 | ADDR8 | out | ||
| 41 | B19 | PB1 | ADDR9 | out | ||
| 40 | B22 | PB2 | ADDR10 | out | ||
| 39 | B21 | PB3 | ADDR11 | out | ||
| 38 | B24 | PB4 | ADDR12 | out | ||
| 37 | B23 | PB5 | ADDR13 | out | ||
| 36 | B26 | PB6 | ADDR14 | out | ||
| 35 | B25 | PB7 | ADDR15 | out | ||
| Port C: multiplexed address/data lines and general purpose I/O. Note: These pins are used by the 32K memory socket and are not available for general purpose I/O if the 32K memory is used | ||||||
| 9 | A9 | PC0 | D0/A0 | in/out | ||
| 10 | A10 | PC1 | D1/A1 | in/out | ||
| 11 | A11 | PC2 | D2/A2 | in/out | ||
| 12 | A12 | PC3 | D3/A3 | in/out | ||
| 13 | A13 | PC4 | D4/A4 | in/out | ||
| 14 | A14 | PC5 | D5/A5 | in/out | ||
| 15 | A15 | PC6 | D6/A6 | in/out | ||
| 16 | A16 | PC7 | D7/A7 | in/out | ||
| Port D: communications and general purpose I/O | ||||||
| 20 | A20, J2-1 | PD0 | SCI RxD | in/out | ||
| 21 | A21, J2-2 | PD1 | SCI TxD | in/out | ||
| 22 | A22, J3-10 | PD2 | MISO | in/out | ||
| 23 | A23, J3-8 | PD3 | MOSI | in/out | ||
| 24 | A24, J3-6 | PD4 | SCK | in/out | ||
| 25 | A25, J3-4 | PD5 | /SS | in/out | ||
| Port E: analog inputs and general purpose inputs | ||||||
| 43 | B17 | PE0 | AN0 | in | ||
| 45 | B15 | PE1 | AN1 | in | ||
| 47 | B13 | PE2 | AN2 | in | ||
| 49 | B11 | PE3 | AN3 | in | ||
| 44 | B18 | PE4 | AN4 | in | ||
| 46 | B16 | PE5 | AN5 | in | ||
| 48 | B14 | PE6 | AN6 | in | ||
| 50 | B12 | PE7 | AN7 | in | ||